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GHSA-q26p-9cq4-7fc2
No affected components available
Impact
A vulnerable node can be forced to shutdown/crash using a specially crafted message.
During the peer-to-peer connection handshake, a shared secret key is computed. The implementation did not verify whether the EC public key provided by the remote party is a valid point on the secp256k1 curve. By simply sending an all-zero public key, a crash could be induced due to unexpected results from the handshake.
The issue was fixed by adding a curve point validity check in https://github.com/ethereum/go-ethereum/commit/159fb1a1db551c544978dc16a5568a4730b4abf3
Patches
A fix has been included in geth version 1.14.13 and onwards.
Workarounds
Unfortunately, no workaround is available.
Credits
This issue was originally reported to Polygon Security by David Matosse (@iam-ned).
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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